Maybe it's because you got the name wrong: it's called Hollywood Pies. I haven't tried them just yet but my impression is that you wouldn't have trouble finding them if you place an order first, because then you can ask them for details. Their website, however, is pretty clear about the pickup location. It's purposely set up as take-out/delivery only, so there's no point in trying to show up unannounced.

It's take away or delivery (if you're in there delivery area) only. And the website tells you exactly where to drive to (if you're picking up) and then call them and they will come out to your vehicle with the pie...

One poster said:-------Regarding the pick-up arrangement, I spoke to the fellow who brought the pizza and he said they only have a catering license. So they can't have anyone go directly to the facility. They're looking to open a regular restaurant, maybe on Fairfax, sometime soon.--------